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Old 13th June 2005, 03:15 AM   #1
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Talking OPA549 GC for Car

Hi guys:
I have lots of OPA549 chips lying around and was thinking of designing a GC for subwoofer to be used in my car, OPA549 data sheet suggests that it could be operated via single supply, as I am a usual lamer, therefore i was looking forward if anyone in this forum could guide me as how to make a GC with OPA549 with single supply of 12Volts?
Any help will be appreciated.
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Old 13th June 2005, 03:49 AM   #2
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it can certainly be done, but at 12v single supply, you're not going to get more than a few watts..
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Old 13th June 2005, 04:13 AM   #3
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Hi friend, how i found rms in my OPA549T amp?
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Old 13th June 2005, 04:55 AM   #4
Sashi is offline Sashi  India
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Quote:
Originally posted by mod_evil
Hi friend, how i found rms in my OPA549T amp?

Hi Friend,look here
OPA541 power rating
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Old 13th June 2005, 05:21 AM   #5
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Ohhh friend, thanks for the link! When i paraleling 2 OPA549 the W drouble?
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Old 13th June 2005, 05:23 AM   #6
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the wattage won't double when you parllel, unless you're driving low loads. Bridging will though.
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Old 13th June 2005, 03:42 PM   #7
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Thumbs up OPA549

Well I was planning to use three OPA549s in bridge parallel mode as mentioned in data sheet, and it will deliver some nice output, but my question remains the same
HOW TO USE 12volt supply?
any ideas/ suggestions?
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Old 13th June 2005, 03:57 PM   #8
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single supply opa549

You need connect the V- to the GROUND...


Thanks.
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Old 13th June 2005, 04:02 PM   #9
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thanks mod_evil , link that u have posted is of great help, let me work out the schematics for bridged parallel woofer for car and i ll post the same here.
Rehan
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Old 13th June 2005, 04:04 PM   #10
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Okay... Can you post in here the schematic of your bridged parallel OPA549?
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